Answer:
The left end approaches to + Infinite being an exponential function, and the right end to 0 
Step-by-step explanation:
we have to remember the exponential function, the best way to find the answer is plotting the graph or arranging a table of values.
As you can see in the attached graph the y axis gets closer and closer to 0 as it moves forward in the x axis, and as it moves to the left the y axis starts increasing rapidly.
Also you got to keep in mind the way that functions behave in terms of the sign of its variable. for example the 10 in this equation only makes the curve to get wider, but if you change the sign to minus, the answer would be different.
 
        
             
        
        
        
Answer:
you do a line that goes through b but doesn't go through the circle
 
        
             
        
        
        
The answer is selections 1 and 4
        
             
        
        
        
Merry has twice as many pencils, so Sue will have half as many.  Thus, S=X/2, where S is the amount of Sue's pencils.